KR20180101208A - Marking device, defect inspection system and film manufacturing method - Google Patents

Abstract

An objective of the present invention is to provide a marking device capable of improving yield of a product by suppressing entrainment from attaching to an area other than a defect point of a film even if entrainment is scattered until droplets are injected from an injection hole and then droplets are landed on an optical film. The marking device capable of marking information by injecting droplets onto an optical film comprises: a droplet injection device having an injection surface on which an injection hole for injecting the droplets is formed on the optical film; and a scattering control member provided between the injection surface and the optical film and capable of blocking droplets scattered until the droplets are injected from the injection hole and then landed on the optical film. The scattering control member is formed with a blocking surface widening in a direction intersecting a normal line of the injection surface.

Description

FIELD OF THE INVENTION [0001] The present invention relates to a marking apparatus, a defect inspection system,

The present invention relates to a marking apparatus, a defect inspection system, and a film production method.

For example, an optical film such as a polarizing film is wound around a core material after inspecting defects such as foreign matter defect and concavo-convex defect. Information about the position and type of defect (hereinafter referred to as " defect information ") is recorded on the optical film by printing a barcode on the widthwise end of the optical film or by marking the defective portion. The optical film wound on the core material is cut out from the optical film on the upstream side and shipped as a disk roll when the amount of winding reaches a certain amount. Further, the optical film can be cut out on the basis of the marking performed at the defective portion, whereby a piece of sheet (product) can be pulled out.

For example, Patent Document 1 discloses a defect marking apparatus which can detect a partial defect of a sheet-like product conveyed in a longitudinal direction perpendicular to the width direction with a certain width, . On the other hand, Patent Document 2 exemplifies a non-contact type printing method such as inkjet as a marking means.

Patent Document 1: Japanese Patent Application Laid-Open No. 2002-303580 Patent Document 2: Japanese Patent Application Laid-Open No. 2011-102985

The applicant of the present invention is also developing a marking device capable of marking information by ejecting droplets onto an optical film. This marking apparatus has a liquid ejection apparatus having an ejection surface on which an ejection hole for ejecting liquid drops is formed on an optical film. In such a marking apparatus, in addition to the characteristics such as the size and viscosity of the liquid droplet ejected from the ejection hole, when the liquid droplet is ejected from the ejection hole and then landed on the optical film, The inventors of the present invention have found that the droplets are scattered. If the scattered droplet adheres to an area other than the defective part of the optical film, the part which should be originally produced is contaminated with the droplet, and the contaminated part may not be discarded as a defective part, There was a possibility.

SUMMARY OF THE INVENTION The present invention has been made in view of the above circumstances, and it is an object of the present invention to prevent the droplet from adhering to a region other than a defective portion of the film even when the droplet is scattered until the droplet is ejected from the injection hole and landed on the optical film, A defect inspection system, and a film production method capable of improving the yield of the film.

In order to achieve the above object, the present invention employs the following means.

(1) A marking apparatus according to an embodiment of the present invention is a marking apparatus capable of marking information by injecting a droplet onto an optical film, wherein the marking apparatus comprises: an injection surface on which the injection hole for injecting the droplet is formed; And a scattering control member provided between the emission surface and the optical film and capable of blocking a droplet scattered until the droplet is ejected from the injection hole until the droplet is landed on the optical film, The scattering limiting member is formed with a blocking surface that widens in a direction intersecting the normal to the emission surface.

(2) In the marking apparatus described in (1), the droplet may include a first droplet scattered when the droplet is ejected from the injection hole, a second droplet scattered when the droplet lands on the optical film, May be included.

(3) In the marking apparatus according to (1) or (2), the scattering limiting member may be provided with a scattering regulating plate having a thickness in a direction parallel to the normal to the emission surface.

(4) In the marking apparatus according to (3), the scattering restriction plate may include a first scattering restriction plate disposed on one side with an injection path through which the liquid droplets are injected, and a second scattering plate disposed on the other side And the second scattered restricting plate disposed in the second scattering restricting plate.

(5) In the marking apparatus described in (4) above, the injection passage follows a direction intersecting with the vertical direction, the first shake regulation plate is disposed above the injection passage in the vertical direction, The regulating plate may be disposed below the injection passage in the vertical direction.

(6) In the marking apparatus described in (4) or (5) above, the first scattering restriction plate is provided with a first blocking surface that widens in a direction crossing the normal line of the emission surface, The plate may be provided with a second blocking surface that is widened in parallel with the first blocking surface.

(7) In the marking apparatus according to any one of (4) to (6), the interval at which the first scattering regulation plate and the second scattering regulation plate are separated is larger than the diameter of the injection hole It may be.

(8) In the marking apparatus according to (5), the scattering regulation plate may be only the second scattering regulation plate.

(9) In the marking apparatus according to any one of (1) to (8), a shielding member provided on the injection surface and capable of blocking a droplet scattered when the droplet is ejected from the injection hole is added And the shield member may be provided with an opening which is opened at a position facing the injection hole and has an inner wall surface for shielding the droplet scattered in a direction intersecting the normal line of the emission surface.

(10) In the marking apparatus according to (9), the diameter of the opening may be larger than the diameter of the injection hole.

(11) In the marking apparatus according to (9) or (10), a tapered portion having an inclined surface facing the injection hole may be formed at an edge of the opening portion on the emission surface side.

(12) The marking apparatus according to any one of (1) to (11), further comprising: an optical film provided between the exit surface and the optical film, for ejecting the droplet from the injection hole, A sucking device capable of sucking a droplet that is scattered until the droplet is discharged may be further provided.

(13) In the marking apparatus according to (12), the suction device may include a first suction mechanism disposed on one side with an injection passage through which the liquid droplets are injected, and a second suction mechanism disposed on the other side with the injection passage interposed therebetween And at least one of the first suction mechanism and the second suction mechanism may be provided.

(14) In the marking apparatus according to (13), the injection path is along a direction intersecting with the vertical direction, the first suction mechanism is arranged above the injection path in the vertical direction, May be disposed below the injection passage in the vertical direction.

(15) In the marking apparatus according to (14), the suction device may be only the second suction mechanism.

(16) In the marking apparatus according to any one of (1) to (15), the droplet ejection apparatus is characterized in that, while the long optical strip is transported, The droplet may be ejected from the opposite side of the position where the optical film contacts the guide roll, with the optical film interposed therebetween.

(17) A defect inspection system according to one aspect of the present invention includes: a transfer line for transferring a long strip-shaped film; a defect inspection device for defect inspection of a film carried on the transfer line; The marking apparatus according to any one of (1) to (16) above, which is capable of marking information by ejecting a droplet at a position of a defect based on the marking information.

(18) In the defect inspection system according to (17), the marking device may eject the droplets in a direction crossing the vertical direction with respect to a film conveyed in a direction parallel to the vertical direction on the conveyance line .

(19) In the defect inspection system according to (17), the marking device may eject the droplet upward from the vertical direction with respect to the film conveyed in the direction intersecting the vertical direction with the conveyance line.

(20) The defect inspection system according to any one of (17) to (19), further comprising a guide roll in contact with the film, wherein the marking apparatus comprises: And droplets may be ejected from a position opposite to a position where the film contacts the guide roll.

(21) In the defect inspection system according to (20), the film may be stuck on the outer peripheral surface of the guide roll at an angle range of not less than 40 deg. But not more than 130 deg.

(22) A film production apparatus according to one aspect of the present invention includes the defect inspection system described in any one of (17) to (21) above.

(23) The film production method according to one aspect of the present invention includes a step of marking using the defect inspection system described in any one of (17) to (21) above.

According to the present invention, even when the droplet is scattered until the droplet is ejected from the injection hole and then adhered to the optical film, the adhesion of the droplet to the area other than the defective part of the film is suppressed, Apparatus, a defect inspection system, and a film production method.

1 is a plan view showing an example of a liquid crystal display panel.
2 is a sectional view taken along the line II-II in Fig.
3 is a sectional view showing an example of an optical film.
4 is a side view showing a configuration of a film production apparatus according to the first embodiment.
5 is a perspective view showing a production process.
Fig. 6 is a perspective view showing the droplet ejection apparatus, the shielding plate, and the fixing member in the marking apparatus according to the first embodiment. Fig.
7 is a front view showing the droplet ejection apparatus, the shielding plate, and the fixing member in the marking apparatus according to the first embodiment.
8 is a sectional view taken along the line VIII-VIII in Fig.
Fig. 9 is an enlarged view of the main part of Fig. 8, illustrating the operation of the shielding plate according to the first embodiment. Fig.
10 is a sectional view corresponding to Fig. 8 showing a first modification of the fixing member.
Fig. 11 is a sectional view corresponding to Fig. 8 showing a second modification of the fixing member. Fig.
Fig. 12 is a sectional view corresponding to Fig. 8, showing a modified example of the shielding member.
13 is a perspective view showing the marking apparatus according to the first embodiment.
Fig. 14 is an explanatory view of an action of the scattering-restricting member in the marking apparatus according to the first embodiment, including an enlarged view of the main part of Fig. 13. Fig.
15 is a perspective view showing the marking apparatus according to the second embodiment.
16 is a view for explaining the action of the suction device in the marking apparatus according to the second embodiment.
Fig. 17 is a view showing a marking apparatus according to the third embodiment, and includes a cross section corresponding to Fig. 8; Fig.

(First Embodiment)

Hereinafter, a first embodiment of the present invention will be described in detail with reference to the drawings.

In this embodiment, as a production system of an optical display device, a film production apparatus constituting a part thereof and a film production method using the film production apparatus will be described.

The film production apparatus is to produce a resin film type optical member (optical film). Examples of the optical film include a polarizing film, a retardation film, and a luminance improving film. For example, the optical film is bonded to a panel-shaped optical display component (optical display panel) such as a liquid crystal display panel and an organic EL display panel. The film production apparatus constitutes a part of a production system for producing such an optical display device or an optical display device including an optical member.

In the present embodiment, a transmissive liquid crystal display device is exemplified as an optical display device. The transmissive liquid crystal display device includes a liquid crystal display panel and a backlight. In this liquid crystal display device, the image can be displayed by causing the illumination light emitted from the backlight to enter from the back side of the liquid crystal display panel and emitting the light modulated by the liquid crystal display panel from the surface side of the liquid crystal display panel.

(Optical display device)

First, the configuration of the liquid crystal display panel P shown in Figs. 1 and 2 will be described as an optical display device. Fig. 1 is a plan view showing an example of a liquid crystal display panel P. Fig. 2 is a sectional view taken along the line II-II in Fig. On the other hand, in FIG. 2, the illustration of the hatching indicating the cross section is omitted.

1 and 2, the liquid crystal display panel P includes a first substrate P1, a second substrate P2 disposed opposite to the first substrate P1, a first substrate P1 And a liquid crystal layer P3 disposed between the first substrate P1 and the second substrate P2.

The first substrate P1 is made of a transparent substrate having a rectangular shape when viewed in a plan view. The second substrate P2 is made of a transparent substrate having a rectangular shape that is relatively smaller than the first substrate P1. The liquid crystal layer P3 is formed by sealing the periphery between the first substrate P1 and the second substrate P2 with a sealing material (not shown), and inserting the liquid crystal layer P3 inside the rectangular region when viewed from a plane surrounded by the sealing material Respectively. In the liquid crystal display panel P, a region to be humidified on the inner side of the outer periphery of the liquid crystal layer P3 as viewed in a plan view is defined as a display region P4, and an outer region surrounding the periphery of the display region P4, (G).

A first optical film F11 as a polarizing film and a third optical film F13 as a brightness enhancement film are sequentially laminated on the rear face (backlight side) of the liquid crystal display panel P so as to overlap the first optical film F11 Respectively. A second optical film F12 as a polarizing film is bonded to the surface (display surface side) of the liquid crystal display panel P. Hereinafter, the film including any one of the first to third optical films (F11 to F13) may be collectively referred to as an optical film (F1X).

(Optical film)

Next, an example of the optical film F1X shown in Fig. 3 will be described. 3 is a sectional view showing the structure of the optical film F1X. On the other hand, in FIG. 3, the illustration of the hatching representing the cross section is omitted.

The optical film F1X is obtained by cutting out a sheet piece having a predetermined length from the optical sheet FX having a long strip shape shown in Fig. Specifically, this optical film F1X has a base sheet F4, an adhesive layer F5 provided on one side (upper side in Fig. 3) of the base sheet F4, and an adhesive layer F5 provided on the base sheet A separator sheet F6 provided on one surface of the base sheet F4 and a surface protection sheet F7 provided on the other surface (bottom surface in Fig. 3) of the base sheet F4.

The base sheet F4 has a structure in which, for example, in the case of a polarizing film, the polarizer F4a sandwiches the pair of protective films F4b and F4c. The adhesive layer F5 bonds the substrate sheet F4 to the liquid crystal display panel P. [ The separator sheet F6 protects the adhesive layer F5. The separator sheet F6 is peeled from the adhesive layer F5 of the optical film F1X before the base sheet F4 is bonded to the liquid crystal display panel P via the adhesive layer F5. A portion of the optical film F1X excluding the separator sheet F6 is a bonded sheet F8.

The surface protective sheet F7 protects the surface of the base sheet F4. The surface protective sheet F7 is peeled from the surface of the base sheet F4 after the base sheet F4 of the bonding sheet F8 is adhered to the liquid crystal display panel P. [

Either one of the pair of protective films F4b and F4c may be omitted for the base sheet F4. For example, the protective film F4b on the side of the pressure-sensitive adhesive layer F5 may be omitted and the pressure-sensitive adhesive layer F5 may be provided directly on the polarizer F4a. The protective film F4c on the side of the surface protective sheet F7 may be subjected to a surface treatment such as an antiglare treatment which can obtain a hard coat treatment or an antiglare effect for protecting the outermost surface of the liquid crystal display panel . The substrate sheet F4 is not limited to the above-described laminated structure, and may be a single-layer structure. The surface protection sheet F7 may be omitted.

(Film Production Apparatus and Film Production Method)

Next, the film production apparatus 1 shown in Fig. 4 will be described. 4 is a side view showing a configuration of the film production apparatus 1 according to the first embodiment.

For example, the film production apparatus 1 manufactures an optical film (F10X) in which a surface protective film is bonded to both surfaces of a polarizing film. The film production method includes a manufacturing process of the optical film (F10X). For example, the film production method includes a disk roll manufacturing process for producing a disk roll (not shown) of a long strip-shaped polarizing film, a long strip-shaped surface protective film bonded to a long strip- And a marking step of performing marking at the position of the defect based on the defect inspection result of the long strip-shaped optical film (F10X). Further, after the marking step, a commercialization step is performed in which the marked part is removed as a defective part and the unmarked part is recovered as a good part.

For example, in a disk roll manufacturing process, a film to be a base of a polarizer such as PVA (polyvinyl alcohol) is subjected to a dyeing treatment, a cross-linking treatment, a stretching treatment, etc., and then TAC (triacetylcellulose) To form a long strip-shaped polarizing film, and the produced polarizing film is wound around the core to obtain an original roll (not shown).

In the bonding step, a long strip-shaped polarizing film and a long strip-shaped surface protective film are unwound from a disc roll of a long strip-shaped polarizing film and a disc roll of a long strip-shaped surface protective film (both not shown) Rolls or the like to be drawn out to form a long strip-shaped optical film F10X, and the produced optical film F10X is wound around the core to obtain a master roll R1. For example, PET (polyethylene terephthalate) is used as the surface protective film.

In the marking process, information is marked on the optical film F10X by ejecting the ink 4i (droplet) at the position of the defect based on the defect inspection result. Here, the term " injection " means that the ink 4i is emitted from the injection hole 21 shown in Fig. 6, for example. In the marking step, a dot-shaped mark having a larger size than the defect is marked (marked) in the defect portion of the optical film F10X, thereby directly recording the mark on the defect portion.

Fig. 5 is a perspective view showing the production process.

As shown in Fig. 5, in the commercialization process, a plurality of sheets (products) are obtained from the long strip-shaped optical film F10X. In the vicinity of the defect (11) in the optical film (F10X), a dot-shaped mark (12) larger than the defect (11) is printed. The region MA in the optical film F10X is a region in which marking (hereinafter, referred to as full width marking) is performed in the entire film width direction. For example, the full-width marking is performed when a defect occurs in a predetermined area of the optical film F10X or the like.

The commercialization process includes a cutting process for cutting the optical film F10X based on the marking information. In the cutting process, the optical film F10X is cut out based on the marking information, resulting in a product (product). In the commercialization process, the marked portion is removed as a defective product (13), and the unmarked portion is recovered as a good product (14).

As shown in Fig. 4, the film production apparatus 1 is provided with a transfer line 9. The conveying line 9 forms a conveyance path for conveying the long strip-shaped optical film F10X unreeled from the original roll R1. The optical film F10X is subjected to predetermined processing such as defect inspection and marking and is wound on a core material as a disk roll R2 after a predetermined processing in the winding section 8. [

On the conveying line 9, a pair of nip rolls 5a and 5b are disposed. An accumulator (not shown) including a plurality of dancer rolls and a guide roll 7 (see Fig. 17) may be disposed on the conveying line 9. [

The pair of nip rolls 5a and 5b rotate in mutually opposite directions with the optical film F10X interposed therebetween to move the optical film F10X in the direction of the arrow V1 (the transport direction of the optical film F10X) The film F10X is taken out.

The accumulator (not shown) absorbs the difference due to the variation of the amount of the optical film F10X, and reduces variations in the tension applied to the optical film F10X. For example, the accumulator has a configuration in which a plurality of dancer rolls located on the upper side and a plurality of dancer rolls located on the lower side are alternately arranged side by side in a predetermined section of the conveying line 9. [

In the accumulator, the optical film F10X is conveyed while the optical film F10X is alternately engaged with the upper side dancer roll and the lower side dancer roll, while the upper side dancer roll and the lower side dancer roll are relatively moved in the upper and lower directions . This makes it possible to store the optical film F10X without stopping the conveying line 9. [ For example, in the accumulator, by increasing the distance between the upper side dancer roll and the lower side dancer roll, the accumulation of the optical film F10X is increased, while the distance between the upper side dancer roll and the lower side dancer roll is narrowed, The accumulation of the film F10X can be reduced. The accumulator is operated at the time of work such as joining after exchanging the core material of the master rolls R1 and R2.

The guide roll 7 (see Fig. 17) guides the optical film F10X drawn by the nip rolls 5a and 5b to the downstream side of the conveying line 9 while rotating. Here, a plurality of guide rolls 7 may be arranged instead of one.

The optical film F10X is wound on the core material as the original roll R2 after the predetermined processing in the winding section 8, and then sent to the next step (see Fig. 5).

(Defect inspection system)

Next, the defect inspection system 10 provided in the film production apparatus 1 will be described.

The defect inspection system 10 includes a transfer line 9, a defect inspection apparatus 2, a defect information reading apparatus 3, a marking apparatus 4, a control apparatus (not shown) 6).

The defect inspection apparatus 2 inspects defects of the optical film F10X. Specifically, the defect inspection apparatus 2 detects various defects such as foreign matter defect, irregular defect, spots defect, and the like, which are generated when the optical film F10X is produced and when the optical film F10X is transported. The defect inspection apparatus 2 performs inspection processing such as reflection inspection, transmission inspection, oblique transmission inspection, and orthogonal Nicole transmission inspection on the optical film F10X conveyed to the conveying line 9, F10X.

For example, the defect inspection apparatus 2 is provided with a plurality of illuminating sections (not shown) for illuminating the optical film F10X with illumination light on the upstream side of the nip rolls 5a, 5b in the conveying line 9, And a plurality of optical detecting portions for detecting light (transmitted light) transmitted through the film F10X or light reflected from the optical film F10X (reflected light).

In the case where the defect inspection apparatus 2 is configured to detect transmitted light, a plurality of illuminating units and a plurality of optical detecting units arranged in the conveying direction of the optical film F10X are arranged so as to face each other with the optical film F10X interposed therebetween. The defect inspection apparatus 2 is not limited to the structure for detecting transmitted light, but may be configured to detect reflected light or to detect transmitted light and reflected light. In the case of detecting reflected light, the light detecting portion may be disposed on the side of the illumination portion.

The illumination unit irradiates the optical film F10X with the illumination light whose light intensity, wavelength, polarization state, etc. are adjusted according to the type of defect inspection. The photodetector part picks up an image of the position where the illumination light of the optical film F10X is irradiated by using an image pickup device such as a CCD. An image (defect inspection result) captured by the optical detecting section is output to the control device 6. [

A defect inspection apparatus for performing defect inspection of a long strip-shaped polarizing film before the long strip-shaped optical film and the long strip-shaped surface protective film are bonded; and a defect inspection apparatus for detecting defect information based on a defect inspection result of the defect inspection apparatus, And a recording device (not shown) for recording on the polarizing film may be additionally provided. The defect inspection apparatus, which is not shown, has the same structure as the above-described defect inspection apparatus 2 and detects defects of the polarizing film.

The defect information recorded by the recording apparatus (not shown) includes information on the position and kind of the defect, and is recorded as an identification code such as a character, a barcode, a two-dimensional code (DataMatrix code, QR code . The identification code includes, for example, information (information on a defect position) indicating whether a defect detected by a defect inspection apparatus (not shown) exists at a distance from the position where the identification code is printed, along the film width direction. Further, the identification code may include information on the type of the detected defect.

The recording apparatus is provided on the downstream side of the defect inspection apparatus not shown in the conveying line of the polarizing film. The recording apparatus has a print head employing, for example, an ink-jet method. The print head ejects ink at a position along the widthwise end of the polarizing film to print the defect information.

The defect information reading device 3 is provided on the conveying line 9 on the downstream side of the defect inspection apparatus 2. The defect information reading device 3 reads defect information recorded on the optical film F10X (the polarizing film). The defect information reading device 3 has an image pickup device. The image pickup device picks up defect information of the optical film F10X to be transported by using an image pickup element such as a CCD.

The defect information reading device 3 includes information on the position and type of a defect and is recorded with defect information recorded as an identification code such as a character, a bar code, a two-dimensional code (DataMatrix code, QR code (trademark) . For example, by reading the defect information, information indicating the presence of a defect detected by the defect inspection apparatus 2 or the like at a distance from the position at which the identification code is printed (distance position information) Can be obtained. When the identification code includes information on the type of the detected defect, information on the type of the detected defect can be obtained by reading the defect information. The defect information (read result) obtained by the defect information reading device 3 is output to the control device 6. [

The marking apparatus 4 is provided on the conveying line 9 on the downstream side of the defect information reading apparatus 3. The marking device 4 marks information on the optical film F10X by ejecting the ink 4i at the position of the defect based on the defect inspection result. The marking device 4 directly prints a defect of the optical film F10X onto a defect portion by marking (marking) a dot-shaped mark larger than the defect.

The marking device 4 may also directly write to a defective portion by marking a dot-shaped, line-shaped or frame-shaped mark having a size including defects. At this time, in addition to the mark, information indicating the type of the defect may be recorded by printing a symbol or shape indicating the type of the defect in the defect position.

The defect inspection system 10 may be provided with a measuring device (not shown) for measuring the transport amount of the optical film F10X. For example, as the side organs, an angular position sensor such as a rotary encoder may be arranged on the nip roll in the conveying line 9. [ The supporting member measures the amount of conveyance of the optical film F10X in accordance with the rotational displacement amount of the nip roll rotating in contact with the optical film F10X. The measurement result of the side organ is output to the control device 6. [

The control device 6 performs overall control of each part of the film production apparatus 1. Specifically, the control device 6 has a computer system as an electronic control device. The computer system includes an arithmetic processing unit such as a CPU and an information storage unit such as a memory or a hard disk.

An operating system (OS) for controlling the computer system and a program for executing various processes are recorded in the information processing unit of the control device 6 and an arithmetic processing unit for executing various processes in the respective units of the film production apparatus 1. [ The control device 6 may also include a logic circuit such as an ASIC for executing various processes necessary for controlling each section of the film production apparatus 1. [ The control device 6 also includes an interface for performing input / output with an external device of the computer system. An input device such as a keyboard or a mouse, a display device such as a liquid crystal display display, a communication device, or the like can be connected to this interface.

The control device 6 analyzes the image picked up by the optical detecting portion of the defect inspection apparatus to determine the presence (position), kind, and the like of the defect. When it is determined that a defect exists in the polarizing film, the control device 6 controls the recording apparatus to record the defect information on the polarizing film. The control device 6 controls the marking device 4 when it is determined that there is a defect in the optical film F10X based on the inspection result of the defect inspection device and the read result of the defect information reading device 3 The mark is printed on the optical film (F10X).

(Marking device)

Next, the marking apparatus 4 provided in the defect inspection system 10 will be described.

13, the marking apparatus 4 includes a liquid ejection apparatus 20, a shielding plate 30 (shielding member), a fixing member 40, and a scattering limiting member 50 . First, in the following description, the liquid ejection apparatus 20, the shielding plate 30, and the fixing member 40 excluding the scattering limiting member 50 among the components of the marking apparatus 4 will be described.

6 is a perspective view showing the liquid ejection apparatus 20, the shielding plate 30 and the fixing member 40 in the marking apparatus 4 according to the first embodiment.

As shown in Fig. 6, the marking apparatus 4 includes a liquid ejection apparatus 20, a shielding plate 30, and a fixing member 40. [ The marking apparatus 4 prints the dot 12 having a larger size than the defect on the defective portion of the optical film F10X by ejecting the ink 4i onto the optical film F10X.

In the following description, the xyz orthogonal coordinate system is set as necessary, and the positional relationship of the respective members is described with reference to this xyz orthogonal coordinate system. In this embodiment, the normal direction of the exit surface 22 of the liquid ejecting apparatus 20 is set to the x direction, and the direction orthogonal to the x direction (the width of the exit surface 22 in the plane of the exit surface 22) Direction is referred to as a y direction, and a direction orthogonal to an x direction and a y direction is referred to as a z direction. Here, the x direction and the y direction are in the horizontal plane, and the z direction is in the vertical direction (upward and downward directions). Further, the x direction may be referred to as the front and back direction, and the y direction may be referred to as the left and right direction. The + x direction may be referred to as a forward direction, the -x direction as a back direction, the + y direction as a left direction, the -y direction as a right direction, the + z direction as an upward direction, and the -z direction as a downward direction.

As shown in Fig. 6, the marking apparatus 4 is provided with an optical film F10X which is transported to the transporting line 9 in the direction V1 (upper side) parallel to the vertical direction, Direction of the ink 4i. For example, the conveying speed (hereinafter referred to as "line speed") of the optical film F10X is set to a value of 50 m / min or less as a range in which the mark 12 can be printed on the optical film F10X. In the present embodiment, the line speed is set to a value of 30 m / min or less.

7 is a front view showing the liquid ejection apparatus 20, the shielding plate 30 and the fixing member 40 in the marking apparatus 4 according to the first embodiment. 8 is a sectional view taken along the line VIII-VIII in Fig. Fig. 9 is an enlarged view of the main part of Fig. 8, illustrating the operation of the shielding plate 30 according to the first embodiment. 9, the illustration of the fixing member 40 is omitted for the sake of convenience.

As shown in Fig. 7, the droplet ejection apparatus 20 has a plurality of ejection heads 20A capable of ejecting ink. Although Fig. 7 shows three injection heads 20A as an example, the number of the injection heads 20A is not limited to this, but may be set as appropriate, such as one, two, or four or more . The injection head 20A has a rectangular parallelepiped shape having a long length in the y direction. The exit surface 22 (see FIG. 8) of the injection head 20A has a rectangular shape having a long length in the y direction when viewed from the front of FIG.

A plurality of shielding plates 30 are provided for each of the plurality of injection heads 20A. 7 shows three shielding plates 30 provided for each of the three injection heads 20A as an example. However, the number of the shielding plates 30 is not limited to this, and the number of the shielding plates 30 may be set according to the number of the injection heads 20A It is configurable and can be set as required, such as 1, 2, or 4 or more. A surface 32 (hereinafter referred to as a "first main surface") opposite to the emission surface 22 of the shield plate 30 has a rectangular shape having substantially the same size as the emission surface 22 as viewed from the front of FIG. 7 It accomplishes.

The fixing member 40 is provided so as to be able to fix the shielding plate 30 for each of the plurality of injection heads 20A. 7 shows three fixing members 40 provided so as to be able to fix the shielding plate 30 for each of the three injection heads 20A as an example, the number of the fixing members 40 is not limited to this The injection head 20A and the shielding plate 30, and can be set appropriately as needed, such as one, two, or four or more. The fixing member 40 has a rectangular frame shape along the contour of the first main surface 32 of the shield plate 30 as viewed from the front of Fig.

For example, the injection head 20A employs a valve-type inkjet head. The amount of the ink ejected from the injection hole 21 of the injection head 20A (hereinafter referred to as the " droplet amount ") is determined by the diameter of the dot-shaped mark 12 printed on the optical film F10X Quot; dot diameter ") is not less than 1 mm but not more than 10 mm, the value should be not less than 0.05 μL but not more than 0.2 μL. In this embodiment, the droplet volume is set to about 0.166 μL.

For example, the viscosity of ink ejected from the injection hole 21 of the injection head 20A (hereinafter referred to as " ink viscosity ") is 0.05 x more than 10 ^-3 Pa · s, yet to be 1.00 × 10 ^-3 Pa · s less than the value of the range. In this embodiment, the ink viscosity is 0.89 x ^10-3 Pa · s.

For example, the ejection speed of the ink from the ejection head 20A (hereinafter referred to as " ink ejection speed ") ranges from 1 m / s to 10 m / s, / s and not more than 5 m / s. In this embodiment, the ink ejection speed is set to about 4.2 m / s. By setting the ink injection speed within the above range, it is possible to accurately print on the target printing area of the optical film (F10) during conveyance, and it is possible to print a droplet upon ink ejection (for example, second droplet 4b shown in Fig. 14) Generation can be suppressed. Here, the term "ink adhering" means that the ejected ink 4i contacts the optical film F10X and is printed on the optical film F10X while collapsing the shape of the ink 4i.

For example, the opening time of the injection hole 21 of the injection head 20A is set to a value in the range of 0.5 ms or more, preferably 0.8 ms or more, and 1.5 mm or less as a range in which the mark 12 can be printed on the optical film F10X. ms or less, more preferably 0.9 ms or more and 1.2 ms or less. In the present embodiment, the opening time is set to about 1.0 ms. By setting the opening time within the above range, the amount of ejected ink can be stabilized, and the desired dot diameter can be obtained, and generation of the droplet 4a can be suppressed at the time of ink ejection.

For example, the ejection pressure of the ink from the injection head 20A (hereinafter referred to as " ink ejection pressure ") is preferably within a range of 0.030 MPa or less in which the mark 12 can be printed on the optical film F10X Is 0.020 MPa or more and 0.028 MPa or less. In this embodiment, the ink injection pressure is about 0.025 MPa. By making the ink injection pressure fall within the above range, the ink ejection speed can be stabilized and generation of the droplet 4a at ink ejection and the droplet at ink ejection (for example, second droplet 4b shown in Fig. 14) can be suppressed .

For example, the distance K1 (see FIG. 9) between the injection hole 21 of the injection head 20A and the optical film F10X is set to 50 mm or less, preferably 5 mm or more and 15 mm or less. This is because if the distance K1 is excessively small, the injection head 20A may contact the optical film F10X. If the distance K1 is excessively large, the ink is scattered when the ink is injected from the injection hole 21 This is because there is a possibility that droplets spread widely. In the present embodiment, the distance K1 is about 13 mm. The distance K1 is a distance between the center of the injection hole 21 in the emission surface 22 and the print surface (the surface on the -x direction side) of the optical film F10X in the normal direction of the emission surface 22 The length of the connected line segment. The distance between the injection hole 21 of the injection head 20A and the optical film F10X corresponds to the distance between the exit face 22 of the injection head 20A and the optical film F10X.

For example, the wind speed around the optical film F10X generated by the transportation of the optical film F10X is preferably set to a value within a range of 0.5 m / s or less in which the mark 12 can be printed on the optical film F10X, The value shall be in the range of 0.2 m / s or less. In the present embodiment, the wind speed is set to about 0.1 m / s under the condition of a line speed of about 25 m / min. When the wind speed is within the above range, the generated droplets 4a and 4b can be prevented from spreading widely.

A plurality of injection holes 21 for injecting ink are formed on the exit surface 22 of the injection head 20A (liquid injection device 20). The plurality of injection holes 21 are arranged in a line in the width direction (y direction) of the emission surface 22 at the center in the up and down direction (z direction) of the emission surface 22. 7 shows nine injection holes 21 per injection surface 22 as an example. In this embodiment, however, 16 injection holes 21 are formed per one injection surface 22. In addition, the number of the injection holes 21 is not limited to this, but can be appropriately set as necessary such as 8 or less or 10 or more. Further, the rows of the injection holes 21 are not limited to one row, but may be suitably set as needed, such as two or more rows. The injection hole 21 forms a circle when viewed from the front of Fig.

As shown in Fig. 8, the shielding plate 30 is provided on the emission surface 22. As shown in Fig. 9, the shielding plate 30 has a thickness t1 in a direction (x direction) parallel to the normal line of the emission surface 22. For example, the thickness t1 of the shielding plate 30 is preferably a value within a range of 2 mm to 10 mm, more preferably, within a range of 2 mm to 5 mm. In the present embodiment, the thickness t1 of the shielding plate 30 is set to about 3 mm. The thickness t1 of the shielding plate 30 may be as large as possible within a range in which the shielding plate 30 does not contact the optical film F10X.

The shielding plate 30 can block the droplet 4a scattered when the ink 4i is ejected from the injection hole 21. [ The shielding plate 30 is provided with an opening 31 which is opened at a position facing the injection hole 21. The opening 31 has an inner wall surface 31a facing the injection passage Ia through which the ink 4i is injected. The inner wall surface 31a of the opening 31 has a cylindrical shape with the injection path Ia as the central axis. The inner wall surface 31a of the opening 31 blocks the droplet 4a scattered in the direction intersecting the normal to the exit surface 22 when the ink 4i is ejected from the injection hole 21. [ At least a part of the scattered droplet 4a is attached to the inner wall surface 31a of the opening 31. [

As shown in FIG. 7, a plurality of openings 31 are provided for each of the plurality of injection holes 21. The plurality of openings 31 are arranged in a line in the width direction (y direction) of the first main surface 32 at the center in the up and down direction (z direction) of the first main surface 32. 7 shows nine openings 31 per one shielding plate 30 as an example. In this embodiment, sixteen openings 31 are provided in correspondence with 16 injection holes 21 per one shielding plate 30 ). The number of the openings 31 is not limited to this, and may be appropriately set as required, such as 8 or less or 10 or more. In addition, the rows of the openings 31 are not limited to one row, but may be suitably set as needed, such as two or more rows. The opening 31 forms a circle when viewed from the front of Fig.

9, the diameter d1 of the opening 31 is larger than the diameter d2 of the injection hole 21 (d1> d2). For example, the ratio d1 / d2 of the diameter d1 of the opening 31 to the diameter d2 of the injection hole 21 is preferably not less than 1.5 but not more than 5, more preferably not less than 2 and not more than 4 Or less. In the present embodiment, the ratio d1 / d2 is about 3, the diameter d1 of the opening 31 is about 3 mm, and the diameter d2 of the injection hole 21 is about 1 mm. The diameter d2 of the injection hole 21 may be a value in the range of 0.1 mm or more but 2 mm or less.

The first main surface 32 of the shielding plate 30 is separated from the optical film F10X. For example, the distance L1 between the first main surface 32 of the shielding plate 30 and the optical film F10X is preferably a value of 10 mm or less, more preferably 5 mm or less. In the present embodiment, the distance L1 is about 10 mm. The distance L1 may be as small as possible within a range in which the shielding plate 30 does not contact the optical film F10X.

The shielding plate 30 abuts against the injection surface 22. In other words, the surface 35 (hereinafter referred to as " second main surface ") of the shielding plate 30 on the emission surface 22 side is disposed on the same plane as the emission surface 22.

For example, the shielding plate 30 is formed of a metal plate such as SUS or a plastic plate such as an acrylic plate and a polypropylene plate (PP plate). In the present embodiment, the shielding plate 30 is formed of an acrylic plate. The shielding plate 30 may be formed of a plate material that does not react with ink. Thus, corrosion of the shielding plate 30 due to ink can be suppressed, so that the corrosion resistance of the shielding plate 30 can be improved.

The fixing member 40 fixes the shielding plate 30 to the injection head 20A. As shown in Fig. 8, the fixing member 40 has a first wall portion 41 and a second wall portion 42. As shown in Fig. For example, the fixing member 40 is formed of a metal plate such as SUS.

The first wall portion 41 covers the side end portions 23 and 33 located in the direction orthogonal to the normal line of the emission surface 22 in both the injection head 20A and the shielding plate 30. [ The first wall portion 41 has a rectangular tubular shape extending in the front-back direction (x direction). The first wall portion 41 is provided on the side of the emission surface 22 at the end portion 23 of the injection head 20A in the up and down directions (z direction) and the width direction (y direction) (Z-direction) and the width direction (y-direction) side end portions 33, respectively. For example, the first wall portion 41 is fastened to the injection head 20A by a fastening member such as a bolt. Thus, relative movement of the injection head 20A and the shielding plate 30 in the up-and-down direction (z-direction) and the width direction (y-direction) is restricted.

The second wall 42 covers the outer edge 34 of the outer periphery of the opening 31 on the first main surface 32 of the shield plate 30. The second wall portion 42 has a rectangular frame shape extending inward in the z direction at the front end (+ x direction end) of the first wall portion 41. [ The second wall portion 42 abuts the outer edge portion 34 of the outer periphery of the opening 31 on the first main surface 32 of the shielding plate 30. For example, the second wall portion 42 is formed integrally with the first wall portion 41 by the same member. The second wall portion 42 may be fastened to the first wall portion 41 by a fastening member such as a bolt. Thus, the relative movement of the injection head 20A and the shielding plate 30 in the front-back direction (x direction) is restricted.

Hereinafter, the scattering limiting member 50 among the components of the marking apparatus 4 will be described. 13 is a perspective view showing the marking apparatus 4 according to the first embodiment. Fig. 14 is an explanatory view for explaining the action of the scattering limiting member 50 in the marking apparatus 4 according to the first embodiment, including an enlarged view of a main part of Fig. 14, the illustration of the fixing wall portions 53 and 54 is omitted for the sake of convenience.

13, the marking apparatus 4 includes a liquid ejecting apparatus 20, a shielding plate 30, a fixing member 40, and a scattering limiting member 50. [

As shown in Fig. 14, the scattering limiting member 50 is provided between the exit surface 22 and the optical film F10X. Specifically, the scattering limiting member 50 is provided between the fixing member 40 and the optical film F10X in front of the shielding plate 30. [ The scattering limiting member 50 blocks the droplets scattered until the ink 4i is ejected from the injection hole 21 and then land on the optical film F10X. The droplet has a first droplet 4a scattered when the ink 4i is ejected from the injection hole 21 and a second droplet 4b scattered when the ink 4i lands on the optical film F10X At least one of them. The first droplet 4a and the second droplet 4b are particularly influential on the printing object.

The droplets scattered until the ink 4i is ejected from the injection hole 21 and landed on the optical film F10X are not limited to the droplets 4a and 4b generated at the time of ink ejection or landing, May be scattered during the flight from the injection hole 21 to the optical film F10X. However, since the droplets scattered during the flight of the ink 4i are few in number as compared with the droplets 4a and 4b generated at the time of ink injection and landing and the size of the droplet itself is very small, The effect of contamination is considered to be small.

The first droplet 4a includes the air floating through the opening 31 without attaching to the inner wall surface 31a of the opening 31 of the shielding plate 30. [ Further, the droplet scattered by the ink 4i during flight takes the same behavior as the first droplet 4a.

The blocking member 50 is formed with a blocking surface 50f which is widened in a direction orthogonal to the normal line of the emitting surface 22. The blocking surface 50f on the exit surface 22 of the scattering limiting member 50 restricts the movement of the first droplet 4a to the optical film F10X side, (50f) restricts the second droplet (4b) from moving toward the injection surface (22) side. That is, at least a part of the scattered first droplet 4a is attached to the shutoff surface 50f on the emission surface 22 side of the scattering limiting member 50, and at least part of the scattered second droplet 4b Is attached to the blocking face (50f) on the optical film (F10X) side in the scattering limiting member (50).

The blocking surface 50f may extend not only in a direction orthogonal to the normal to the emission surface 22 but also in a direction intersecting the normal to the emission surface 22. [ From the viewpoint of effectively blocking the first droplet 4a and the second droplet 4b, for example, the blocking surface 50f is in a direction parallel to the film transport direction so as to maximize the area facing the optical film F10X It is preferable to expand in a direction orthogonal to the normal line of the emission surface 22. [ When the above relationship can not be maintained because of the facility layout relationship, the angle formed between the blocking surface 50f and the normal line of the emission surface 22 may be adjusted so as to be as parallel as possible with respect to the film transportation direction.

As shown in Fig. 13, the scattering limiting member 50 includes scattering regulating plates 51 and 52 and fixed wall portions 53 and 54. As shown in Fig.

The scattering restricting plates 51 and 52 have a thickness in a direction (x direction) parallel to the normal line of the emission surface 22. In the present embodiment, the thickness of the scattering restriction plates 51 and 52 is set to about 3 mm. The thickness of the scattering restricting plates 51 and 52 may be appropriately set as required and may be set so as to block the first and second droplets 4a and 4b.

The scattering control plates 51 and 52 are rectangular in shape having a long side in the film width direction (y direction shown in Fig. 13) and a short side in the film conveying direction (z direction shown in Fig. 13). In this embodiment, the length of the long sides of the scattering restriction plates 51 and 52 is set to about 1,600 mm, which corresponds to the film width, and the length of the short sides of the shake regulation plates 51 and 52 is set to about 50 mm.

As shown in Fig. 14, the first scattering restriction plate 51 is disposed on one side with the injection passage Ia through which the ink 4i is injected. The second scattering restriction plate 52 is disposed on the other side with the injection passage Ia therebetween. The first scattering restriction plate 51 is disposed above the injection passage Ia in the vertical direction and the second shake regulation plate 52 is disposed below the injection passage Ia in the vertical direction. The first scattering regulation plate 51 and the second scattering regulation plate 52 are disposed at positions adjacent to each other with the injection passage Ia therebetween. The first scattering restriction plate 51 is formed with a first blocking surface 51f extending in a direction orthogonal to the normal line of the emission surface 22 and the second blocking plate 52 is provided with a first blocking surface 51f, And a second blocking surface 52f extending in parallel with the first blocking surface 52f.

13, an interval s1 (hereinafter referred to as " slit interval ") at which the first scattering restriction plate 51 and the second scatter restriction plate 52 are spaced is smaller than a diameter (d2) (see Fig. 9). For example, the slit interval s1 is preferably a value in a range of 2 mm or more and 10 mm or less, more preferably 2 mm or more and 5 mm or less. This is because the ink 4i does not pass the slit interval s1 when the slit spacing s1 is made too small, that is, when the ink 4i passes through the first scattering restrictor plate 51 and the second scattering restrictor plate 52, If the slit interval s1 is excessively large, there is a possibility that the first droplet 4a spreads widely from the injection hole 21. In the present embodiment, the slit interval s1 is set to about 5 mm. The diameter d2 of the injection hole 21 is set to about 1 mm.

The first fixed wall portion 53 has a top wall portion 53a and a side wall portion 53b. The first fixed wall portion 53 is formed integrally with the first scattered restricting plate 51. The upper wall portion 53a of the first fixed wall portion 53 is integrally connected to the upper end of the first scattered restricting plate 51 and is inclined so as to be positioned higher in the backward direction (-x direction side). The side wall portion 53b of the first fixed wall portion 53 is integrally connected to the left and right end portions of the first scattered restricting plate 51 and the left and right end portions of the upper wall portion 53a, And then bent and extended backward. As a result, the support rigidity of the first scattered restricting plate 51 is improved and the movement of the first droplet 4a to the upper side and the left and right sides can be regulated.

For example, the first fixing wall portion 53 is fastened to the injection head 20A by a fastening member such as a bolt. The relative movement of the injection head 20A, the first fixed wall portion 53 and the first scattered restriction plate 51 in the up and down directions (z direction), the width direction (y direction) and the back and forth direction (x direction) Regulated.

The second fixed wall portion 54 has a lower wall portion 54a and a side wall portion 54b. The second fixing wall portion 54 is formed integrally with the second scattering restriction plate 52. The lower wall portion 54a of the second fixing wall portion 54 is integrally connected to the lower end of the second shake regulation plate 52 and extends rearward (-x direction). The side wall portion 54b of the second fixing wall portion 54 is integrally connected to the left and right end portions of the lower portion of the second shake regulation plate 52 and the left and right ends of the lower wall portion 54a, And extends backward until this. As a result, the support rigidity of the second shake regulating plate 52 can be improved, and the movement of the first droplet 4a to the lower side and the left and right sides can be regulated.

For example, the second fixing wall portion 54 is fastened to the injection head 20A by a fastening member such as a bolt. The relative movement of the injection head 20A, the second fixed wall portion 54 and the second scattering restriction plate 52 in the up-and-down direction (z direction), the width direction (y direction) Regulated.

The blocking face 50f on the optical film F10X side of the scattering-blocking member 50 is separated from the optical film F10X. For example, the distance between the blocking face 50f on the optical film F10X side of the scattering limiting member 50 and the optical film F10X (hereinafter referred to as " blocking face / optical film distance ") is preferably 10 mm or less, more preferably 1 mm or more and 5 mm or less. This is because if the distance between the blocking face and the optical film is too small, the scattering limiting member 50 may contact the optical film F10X. If the distance between the blocking face and the optical film is excessively increased, There is a possibility that the movement of the second droplet 4b can not be regulated. In this embodiment, the distance between the blocking surface and the optical film is set to about 3 mm.

The blocking face 50f of the scattering-blocking member 50 on the side of the emission face 22 is separated from the emission face 22. For example, the distance between the shutoff surface 50f on the side of the exit surface 22 of the scattering limiting member 50 and the exit surface 22 (hereinafter referred to as the "distance between the shutoff surface and the exit surface" . In this embodiment, the distance between the blocking surface and the exit surface is set to about 10 mm. This is because if the distance between the blocking surface and the emission surface is excessively small, there is a possibility that the movement of the second splash 4b can not be restricted by the blocking surface 50f, and if the distance between the blocking surface and the emitting surface is excessively large It is necessary to increase the slit interval s1.

For example, the scattering limiting member 50 is formed of a metal plate such as SUS or a plastic plate such as an acrylic plate and a polypropylene plate (PP plate). In the present embodiment, the scattering limiting member 50 is formed of an acrylic plate. Further, the scattering limiting member 50 may be formed of a plate material that does not react with ink. Thus, corrosion of the scattering-blocking member 50 due to the ink can be suppressed, so that the anti-scattering member 50 can be improved in corrosion resistance.

As described above, the marking apparatus 4 according to the present embodiment is a marking apparatus 4 capable of marking the mark 12 by injecting the ink 4i onto the optical film F10X, A liquid ejection apparatus 20 having an ejection surface 22 in which ejection holes 21 for ejecting the ink 4i are formed in the ejection surface 22 and the optical film F10X, It is possible to block at least one of the first droplet 4a scattered when the ink 4i is ejected from the ink chamber 21 and the second droplet 4b scattered when the ink 4i lands on the optical film F10X The scattering limiting member 50 is provided with a blocking surface 50f which is widened in the direction orthogonal to the normal of the emitting surface 22. [

The first droplet 4a scattered when the ink 4i is ejected from the injection hole 21 and the ink 4i are ejected from the optical film F10X between the ejection surface 22 and the optical film F10X, Limiting member 50 capable of blocking at least one of the second droplet 4b that is scattered when it is landed on the scattering member F10X and the scattering member 50 is provided in the scattering member 50 in the direction perpendicular to the normal of the emission surface 22 As compared with the case where the ink 4i is directly ejected from the droplet ejection apparatus 20 without providing the scattering limiting member 50, The first droplet 4a can be prevented from moving toward the optical film F10X and the second droplet 4b can be prevented from moving toward the emission surface 22 between the injection holes 21 When the first droplet 4a is scattered or the ink 4i is landed on the optical film F10X when the ink 4i is ejected from the optical film F10X It is possible to prevent the first and second droplets 4a and 4b from adhering to areas other than the defect portions of the optical film F10X even if the second droplet 4b is scattered, have.

The scattering limiting member 50 is provided with the scattering regulating plates 51 and 52 having a thickness in the direction (x direction) parallel to the normal to the emitting surface 22, It is possible to improve the rigidity of the scattering regulating plates 51 and 52 by adjusting the thickness so that the first and second droplets 4a and 4b can be effectively blocked.

The scattering limiting member 50 is disposed on the other side with the first scattering regulation plate 51 disposed on one side with the injection passage Ia through which the ink 4i is injected and the injection passage Ia between The first droplet 4a and the second droplet 4b scattered on both sides with the injection passage Ia interposed therebetween can be effectively blocked by a simple structure.

The first scattering restriction plate 51 is disposed above the injection passage Ia in the vertical direction and the second shake regulation plate 52 is disposed below the injection passage Ia in the vertical direction, The first droplet 4a and the second droplet 4b, which are scattered to both sides in the up and down directions, can be effectively blocked by a simple structure with the first droplet Ia interposed therebetween.

The first scattering restriction plate 51 is formed with a first blocking surface 51f that extends in a direction orthogonal to the normal of the emission surface 22 and the second blocking plate 52 is provided with a first blocking surface The first blocking face 51f and the second blocking face 52f are formed so as to be parallel to each other so that the exit face 22 and the optical film The movement of the first droplet 4a toward the optical film F10X and the movement of the second droplet 4b toward the emission surface 22 between the first droplet F10X and the second droplet 4b can be effectively regulated can do.

It is also possible to avoid that the ink 4i touches the first scattering regulation plate 51 and the second scattering regulation plate 52 by making the slit spacing s1 larger than the diameter d2 of the injection hole 21 .

In the above embodiment, the first scattering restriction plate 51 and the second scatter restriction plate 52 are disposed on both sides with the injection path Ia interposed therebetween. However, the present invention is not limited to this. For example, the scattering restriction plate may be disposed only below the injection passage Ia through which the ink 4i is injected in the vertical direction. As a result, compared with the case where the first scattering restriction plate 51 and the second scatter restriction plate 52 are disposed on both sides with the injection passage Ia interposed therebetween, the cost can be reduced by a simple structure by reducing the number of parts The first droplet 4a and the second droplet 4b which are scattered below the injection path Ia due to the influence of gravity can be selectively blocked. Particularly, when the dot diameter is large (the droplet amount is large), when the optical film F10X is transported in the up and down direction, the droplets scattered downward are increased, so that the scattering restriction plate is disposed only below the injection path Ia Benefits increase.

The shield plate 30 further includes a shield plate 30 provided on the emission surface 22 and capable of blocking the droplet 4a scattered when the ink 4i is ejected from the injection hole 21, And an opening 31 having an inner wall surface 31a for blocking the droplet 4a scattered in the direction intersecting the normal line of the emission surface 22 is formed in the injection hole 21 at the position opposite to the injection hole 21 The amount of the droplet 4a scattered in the direction intersecting the normal to the exit surface 22 can be reduced as compared with the case where the ink 4i is directly ejected from the droplet ejection apparatus 20 without providing the shielding plate 30. [ The flared diameter L2 (see FIG. 9) centered on the mark 12 when the droplet 4a is attached to the optical film F10X can be made small, Even if the droplet 4a is scattered when the ink 4i is ejected from the optical film F10X, To inhibit the complex, it is possible to improve the yield of products.

The shielding plate 30 having the thickness t1 in the direction parallel to the normal line of the emission surface 22 is provided to adjust the thickness t1 of the shielding plate 30 to adjust the diffusion range of the droplet 4a to It is possible to prevent the droplet 4a from adhering to an area other than the defective portion of the optical film F10X. For example, by making the thickness t1 of the shielding plate 30 as large as possible within a range in which the shielding plate 30 does not contact the optical film F10X, the spread range of the droplet 4a can be minimized.

In addition, by additionally providing the fixing member 40 capable of fixing the shielding plate 30 to the droplet ejection apparatus 20, the shielding plate 30 can be prevented from being detached from the droplet ejection apparatus 20, It becomes easy to firmly fix the injection device 20 to the injection device 20.

The fixing member 40 is provided with a first wall portion 22a that covers the side end portions 23 and 33 located in a direction orthogonal to the normal line of the emission surface 22 in both the injection head 20A and the shielding plate 30, And the second wall portion 42 covering the outer periphery 34 of the outer periphery of the opening 31 at the first main surface 32 of the shielding plate 30, And the relative movement of the injection head 20A and the shielding plate 30 in the forward, backward, left-right, up-and-down direction (xyz direction) can be regulated with a simple configuration.

The liquid ejection apparatus 20 has a plurality of ejection heads 20A capable of ejecting the ink 4i and a plurality of shielding plates 30 are provided for each of the plurality of ejection heads 20A, A plurality of shielding plates 30 can be fixed to the plurality of injection heads 20A in a one-to-one relationship with the respective injection heads 20A, The shielding plate 30 and the fixing member 40 can be positioned as compared with the case where the shielding plate and the fixing member of the size corresponding to the plurality of injection heads 20A are provided, It is possible to prevent the relative position of the light-emitting element 10 from being changed.

In comparison with the case in which the shielding plate 30 is separated from the emission surface 22 by abutting the shielding plate 30 against the emission surface 22, It becomes easy to regulate the relative movement in the direction (x direction).

The diameter d1 of the opening 31 is made larger than the diameter d2 of the injection hole 21 so that the ink 4i injected from the injection hole 21 can be prevented from reaching the opening 31. [

The defect inspection system 10 according to the present embodiment includes a conveyance line 9 for conveying a long strip-shaped optical film F10X and an optical film F10X conveyed to the conveyance line 9 And a marking device 4 capable of printing the mark 12 by injecting the ink 4i at the position of the defect 11 based on the defect inspection result.

According to this embodiment, by providing the marking device 4 described above, when the ink 4i is ejected from the injection hole 21, the first droplet 4a is scattered or the ink 4i is ejected from the optical film F10X, The first droplet 4a and the second droplet 4b are prevented from adhering to the area other than the defective spot of the optical film F10X even if the second droplet 4b is scattered when the droplet lands on the optical film F10X, Can be improved. It is also possible to provide the marking device 4 capable of printing the mark 12 by injecting the ink 4i at the position of the defect 11 on the basis of the defect inspection result, It is possible to effectively prevent the droplets 4a and 4b from adhering to areas other than the defective portion of the optical film F10X, and to further improve the yield of the product.

The marking device 4 is configured to eject the ink 4i in the horizontal direction orthogonal to the vertical direction with respect to the optical film F10X transported in the direction parallel to the vertical direction to the conveying line 9, The ink 4i is naturally sagged downward from the injection hole 21 by the influence of gravity as compared with the case where the ink 4i is injected downward in the vertical direction with respect to the optical film F10X transported in the horizontal direction Can be suppressed.

The film production apparatus 1 according to the present embodiment includes the defect inspection system 10 described above.

According to the present embodiment, by providing the defect inspection system 10 described above, when the ink 4i is ejected from the injection hole 21, the first droplet 4a is scattered or the ink 4i is scattered by the optical film F10X The first droplet 4a and the second droplet 4b are prevented from adhering to the area other than the defective portion of the optical film F10X even if the second droplet 4b is scattered when the optical disk F is mounted on the optical film F10X, The yield can be improved. In addition, by printing the mark 12 in accordance with the position of the defect, it is possible to effectively inhibit the droplets 4a and 4b from adhering to areas other than the defective portion of the optical film F10X, thereby further improving the product yield .

The film manufacturing method according to the present embodiment includes a step of marking using the defect inspection system 10 described above.

According to the present embodiment, by including the above-described marking step, when the ink 4i is ejected from the injection hole 21, the first droplet 4a is scattered or the ink 4i is landed on the optical film F10X The first droplet 4a and the second droplet 4b are prevented from adhering to the area other than the defective portion of the optical film F10X even if the second droplet 4b is scattered at the time of scattering, . In addition, by printing the mark 12 in accordance with the position of the defect, it is possible to effectively inhibit the droplets 4a and 4b from adhering to areas other than the defective portion of the optical film F10X, thereby further improving the product yield .

Incidentally, as a cause of scattering of droplets when ink is ejected from an injection hole, (A1) a liquid droplet amount, (A2) ink viscosity and the like can be considered.

Hereinafter, the cause will be described.

If the liquid droplet amount is small, it is considered that the influence of the droplet is not substantially scattered when the ink is ejected from the injection hole or that the optical film is contaminated even if the droplet is scattered. On the other hand, when the droplet amount is large, the droplet is scattered when the ink is ejected from the injection hole, and the scattered droplet contaminates the optical film.

For example, in a commercially available inkjet printer, since the droplet amount is as small as about 1 x 10 < ^-6 > L, even if droplets are hardly scattered or droplets are scattered when ink is ejected from the injection holes, Is thought to be small. On the other hand, in the liquid droplet ejection apparatus 20 according to the present embodiment, the liquid droplet amount is about 0.166 μL, which is considerably larger than that of commercially available ink jet printers. Therefore, droplets are scattered when ink is ejected from the ejection holes, The optical film may be contaminated.

Further, when the ink viscosity is increased, it is considered that the droplet is hardly scattered when the ink is ejected from the injection hole. On the other hand, when the ink viscosity is low, the inventors of the present invention have found that droplets are scattered when ink is ejected from the injection holes, and scattered droplets contaminate the optical film.

For example, in a commercially available ink jet printer, the ink viscosity is about 1.17 x ^10-3 Pa · s. On the other hand, in the liquid ejecting apparatus 20 according to the present embodiment, since the ink viscosity is about 0.89 10 ^-3 Pa · s and is smaller than that of a commercially available inkjet printer, the droplet is scattered when ink is ejected from the ejection hole , Scattered droplets may contaminate the optical film.

Even if the droplet is scattered when the ink is ejected from the injection hole by the above-mentioned causes A1 and A2, the shielding plate 30 is provided with the opening By forming the opening 31 having the inner wall surface 31a for blocking the droplet 4a scattered in the direction intersecting the normal line of the emitting surface 22, The diffusion range of the droplet 4a scattered in the direction intersecting the normal to the emission surface 22, specifically, the droplet 4a is smaller than the diffusion range of the droplet 4a, The scattered diameter L2 (see Fig. 9) centered on the mark 12 when attached to the optical film F10X can be made small, so that the droplet 4a is adhered to the region other than the defective portion of the optical film F10X The yield of the product can be further improved.

On the other hand, when the ink is deposited on the optical film (the object to be printed), the cause of scattering of the droplet is (B1) the dot diameter (droplet amount), (B2) the ink viscosity, (B3) .

Hereinafter, the cause will be described.

If the dot diameter is very small (if the liquid droplet amount is small), it is considered that the influence of the ink droplet on the printing object is small even if the droplet is scarcely scattered or the droplet is scattered. On the other hand, when the dot diameter is large (the droplet amount is large), the inventors of the present invention have found that droplets are scattered when the ink is deposited on the printing object and the scattered droplets contaminate the printing object.

For example, in a commercially available inkjet printer, the dot diameter is as small as about 20 占 퐉, and the droplet amount is estimated to be about 1 占^0-6占 L. Even if the droplet is hardly scattered or the droplet is scattered It is considered that the effect of polluting the subject is small. On the other hand, in the liquid droplet ejection apparatus 20 according to the present embodiment, the dot diameter is a value in a range of 1 mm to 10 mm, and the droplet amount is estimated to be about 0.166 μL. (Because the droplet volume is quite large), droplets may be scattered when the ink is deposited on the printing target, and scattered droplets may contaminate the printing target.

Further, when the ink viscosity is large, it is considered that the droplet is hardly scattered when the ink is deposited on the printing object. On the other hand, when the ink viscosity is low, it has been found by the inventors of the present invention that the droplet is scattered when the ink is deposited on the printing object, and the scattered droplet contaminates the printing object.

For example, in a commercially available ink jet printer, the ink viscosity is about 1.17 x ^10-3 Pa · s. On the other hand, in the liquid ejecting apparatus 20 according to the present embodiment, since the ink viscosity is about 0.89 10 ^-3 Pa · s and is smaller than that of a commercially available inkjet printer, the droplet is scattered when the ink lands on the printing object, Scattered droplets may contaminate the target of the factor.

Further, if the printing object is a paper medium such as a recording paper, it is considered that the droplet is hardly scattered when the ink is deposited on the printing object. On the other hand, if the object to be printed is an optical film containing PVA and TAC, the inventors of the present invention have found that droplets are scattered when the ink is deposited on the object to be printed, and the scattered droplets contaminate the object to be printed.

For example, in a commercially available inkjet printer, a printing object is a paper medium. On the other hand, in the liquid droplet ejection apparatus 20 according to the present embodiment, the object to be printed is an optical film, and when the ink is deposited on the object to be printed, the droplet is scattered, and scattered droplets may contaminate the object.

Further, when the line speed is small, it is considered that the droplet is hardly scattered when the ink is landed on the printing object. On the other hand, when the line speed is high, it has been found by the inventors of the present invention that droplets are scattered widely when the ink is landed on the printing object, and the scattered droplets contaminate the printing object.

For example, in a commercially available inkjet printer, the line speed is as small as about 3 m / min. On the other hand, in the present embodiment, the line speed is a value of 30 m / min or less, and the upper limit is large with a value of 50 m / min or less as the range in which the mark 12 can be printed on the optical film F10X, The droplet may be scattered widely when the droplet is landed on the object, and scattered droplets may contaminate the object to be printed.

Even when the droplet is scattered when the ink is ejected from the injection hole by the causes (A1), (A2), or the like, the droplets are scattered when the ink is landed on the printing object by the causes (B1) to The first droplet 4a scattered when the ink 4i is ejected from the injection hole 21 and the second droplet 4b scattered when the ink 4i is ejected from the injection hole 21 are formed between the emission surface 22 and the optical film F10X, Limiting member 50 capable of blocking at least one of the second droplet 4b that is scattered when the optical film F10X is landed on the optical film F10X is provided in the scattering member 50, As compared with the case where the ink 4i is directly ejected from the droplet ejection apparatus 20 without the scattering limiting member 50 by forming the blocking surface 50f extending in the direction orthogonal to the normal line, The first droplet 4a moves between the optical film F10X and the optical film F10X The first droplet 4a and the second droplet 4b can be prevented from moving in the region other than the defective portion of the optical film F10X It is possible to effectively suppress the adherence and further improve the yield of the product.

Modifications of the embodiment will be described below. In the following modifications, the same reference numerals are given to the components common to those of the first embodiment, and a detailed description thereof will be omitted.

(First Modification of Fixing Member)

10 is a sectional view corresponding to Fig. 8 showing a first modification of the fixing member.

In the above embodiment, the fixing member 40 is formed as a separate member from the shielding plate 30. On the other hand, in this modification, as shown in Fig. 10, the fixing member 140 is integrally formed by the same member as the shielding plate 130. [

The fixing member 140 is fixed to the injection head 20A together with the shielding plate 130. [ The fixing member 140 has a shielding plate 130 and a side wall portion 141. For example, the fixing member 140 is formed of a metal plate such as SUS.

The side wall portion 141 covers the side end portion 23 located in the direction orthogonal to the normal line of the emission surface 22 of the injection head 20A. The side wall portion 141 has a rectangular tubular shape extending in the front-back direction (x direction). The side wall portion 141 abuts a portion on the side of the emission surface 22 at the end portion 23 of the injection head 20A in the up and down directions (z direction) and the width direction (y direction).

The shielding plate 130 has a rectangular frame shape extending inward in the z direction from the front end (+ x direction end) of the side wall portion 141. The shielding plate 130 is provided with an opening portion 131 having an inner wall surface 131a which is open at a position opposite to the injection hole 21 and blocks the droplet 4a scattered in the direction intersecting the normal line of the emission surface 22 (131) is formed. The shielding plate 130 abuts the emission surface 22. In other words, the second main surface 135 of the shielding plate 130 is disposed in the same plane as the emission surface 22.

For example, the side wall portion 141 is fastened to the injection head 20A by a fastening member such as a bolt. The relative movement of the injection head 20A and the shielding plate 30 in the up and down directions (z direction), the width direction (y direction) and the back and forth direction (x direction) is restricted.

The fixing member 140 is integrally formed with the shielding plate 130 so that the side end portion 23 located in the direction orthogonal to the normal line of the emitting surface 22 of the emitting head 20A (Xyz direction) of the injection head 20A and the shielding plate 130 in the forward, backward, left and right directions (xyz directions) of the shielding plate 130. The shielding plate 130 is fixed to the injection head 20A, Movement can be regulated in a simple configuration. In addition, the number of parts can be reduced as compared with the case where the fixing member 40 is formed of a member separate from the shielding plate 30, and the device configuration can be simplified.

(Second Modification of Fixing Member)

Fig. 11 is a sectional view corresponding to Fig. 8 showing a second modification of the fixing member. Fig.

In the first modification example, the shielding plate 130 is in contact with the injection surface 22, for example. On the other hand, in the present modification, as shown in Fig. 11, the shielding plate 130 is separated from the exit surface 22. Specifically, the second main surface 135 of the shielding plate 130 is disposed forward (+ x direction) than the emission surface 22.

Since the diffusion range of the droplet 4a can be adjusted by adjusting the distance between the shielding plate 130 and the emission surface 22 by separating the shielding plate 130 from the emission surface 22, It is possible to prevent the droplet 4a from adhering to an area other than the defective portion of the optical film F10X. It is possible to minimize the diffusion range of the droplet 4a by making the distance between the shielding plate 130 and the emitting surface 22 as large as possible within a range in which the shielding plate 130 does not contact the optical film F10X have. Even if the thickness t1 of the shielding plate 130 is not adjusted, the distance between the shielding plate 130 and the emission surface 22 can be adjusted, as compared with the case where the shielding plate 130 is brought into contact with the emission surface 22 It is possible to adjust the diffusion range of the droplet 4a, thereby improving the degree of freedom in designing.

(Modification of shielding member)

Fig. 12 is a sectional view corresponding to Fig. 8, showing a modified example of the shielding member.

In the above embodiment, the shielding plate 30 having a thickness in a direction parallel to the normal line of the emission surface 22 is used as the shielding member. On the other hand, in this modification, as shown in Fig. 12, a cylindrical member 230 is provided as a shielding member and extends in a direction parallel to the normal line of the emitting surface 22.

The cylindrical member 230 is provided with an opening 231 which is open at a position opposite to the injection hole 21. As shown in Fig. 12, the opening 231 has an inner wall surface 231a facing an injection passage Ia (see Fig. 9) through which ink is injected. The inner wall surface 231a of the opening 231 blocks the droplet 4a scattered in the direction intersecting the normal to the exit surface 22 (see FIG. 9) when the ink is ejected from the injection hole 21.

The inner wall surface 231a of the opening 231 has a cylindrical shape with the injection path Ia as the central axis. The diameter of the opening 231 (inner diameter of the cylindrical member 230) is larger than the diameter of the injection hole 21.

The cylinder member 230 abuts the injection surface 22. In other words, the end surface 235 (second main surface) of the cylindrical member 230 is disposed on the same plane as the exit surface 22.

According to this modification, the cylindrical member 230 extending in the direction parallel to the normal to the exit surface 22 can be provided to adjust the length (length in the x direction) of the tube member 230, It is possible to suppress the adhesion of the droplet 4a to an area other than the defective portion of the optical film F10X. For example, the spreading range of the droplet 4a can be minimized by making the length of the cylindrical member 230 as large as possible within a range in which the cylindrical member 230 does not contact the optical film F10X.

The diameter of the opening 231 is made larger than the diameter of the injection hole 21 so that the ink 4i injected from the injection hole 21 can be prevented from reaching the opening 231. [

(Second Embodiment)

Hereinafter, the configuration of the marking apparatus according to the second embodiment of the present invention will be described. 15 is a perspective view showing the marking apparatus 204 according to the second embodiment. Fig. 16 is a view for explaining the action of the suction device 60 according to the second embodiment, including an enlarged view of the main part of Fig. 15, only the second suction mechanism 62 (the lower suction mechanism) is shown, and the first suction mechanism 61 and the second suction mechanism 62 are shown in Fig. In Fig. 15, for the sake of convenience, the optical film F10X is indicated by a two-dot chain line. 15 and 16, the scattering limiting member 50 is not shown. In this embodiment, constituent elements common to those of the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted.

13, the marking apparatus 4 is provided with the liquid ejection apparatus 20, the shielding plate 30, the fixing member 40, and the scattering limiting member 50, as shown in Fig. 13 . On the other hand, in the present embodiment, as shown in Fig. 15, the marking apparatus 204 further includes a suction apparatus 60. Fig.

As shown in Fig. 16, the suction device 60 is installed between the exit surface 22 and the optical film F10X. The suction device 60 includes a first droplet 4a scattered when the ink 4i is ejected from the injection hole 21 and a second droplet 4b scattered when the ink 4i lands on the optical film F10X 4b are sucked.

As shown in Fig. 15, in the present embodiment, the suction device 60 is provided with the second suction mechanism 62. As shown in Fig. The second suction mechanism 62 is disposed only below the injection passage Ia through which the ink 4i is injected in the vertical direction. The second suction mechanism 62 is formed with a suction surface 62f which is inclined forward and upward so as to face the injection path Ia.

The suction surface 62f of the second suction mechanism 62 is formed with a suction hole 62h for suctioning the first and second droplets 4a and 4b. The suction hole 62h extends to the suction surface 62f with a long length along the width direction (y direction) of the suction surface 62f. Although Fig. 15 shows the suction hole 62h extending along the width direction (y direction) of the suction surface 62f as an example, the arrangement of the suction holes 62h is not limited to this, (Y direction) of the suction surface 62f such that the suction holes 62h are arranged in a line in the width direction (y direction) of the suction surface 62f have.

For example, the distance J1 between the suction surface 62f and the optical film F10X (hereinafter referred to as " suction surface-optical film distance ") is 10 mm or more. This is because if the distance J1 between the suction surface and the optical film is excessively small, there is a possibility that the suction surface 62f and the optical film F10X are in contact with each other. In the present embodiment, the distance J1 between the suction surface and the optical film is set to be about 10 mm. The distance J1 between the suction surface and the optical film is set to the length of a line segment connecting the lower end of the suction surface 62f and the printing surface of the optical film F10X in the normal direction (x direction) of the printing surface.

For example, the distance J2 between the suction surface 62f and the fixing member 40 (hereinafter referred to as " distance between the suction surface and the fixing member ") is 30 mm or more. This is because if the distance J2 between the suction surface and the fixing member is excessively small, there is a possibility that the suction surface 62f and the fixing member 40 are in contact with each other. In this embodiment, the distance J2 between the suction surface and the fixing member is set to about 30 mm. The distance J2 between the suction surface and the fixing member is set such that the length of a line segment connecting the upper end of the suction surface 62f and the lower end of the fixing member 40 in the normal direction (z direction) .

For example, the distance J3 between the suction hole 62h and the injection hole 21 (hereinafter referred to as "distance between the suction hole and the injection hole") is preferably a value of 50 mm or less, more preferably 15 mm And not more than 50 mm. In the present embodiment, the distance J3 between the suction holes and the injection holes is set to about 45 mm. The distance J3 between the suction hole and the injection hole is set so that the distance J3 between the center of the suction hole 62h on the suction surface 62f and the center of the injection hole 21 on the injection surface 22 Length.

For example, the length of the suction hole 62h is set to be equal to the length in the width direction (y direction) of the suction surface 62f, specifically, the length of the suction surface 62f in the width direction (y direction) And is made as small as the thickness of the right and left side walls of the mechanism 62. The length of the suction hole 62h is the length of the suction hole 62h in the longitudinal direction (y direction).

For example, the width of the suction hole 62h is preferably a value of 50 mm or less, more preferably 5 mm or more and a value within a range of 20 mm or less. In this embodiment, the width of the suction hole 62h is set to about 10 mm. The width of the suction hole 62h is set to the length in the short-length direction (the inclined direction of the suction surface 62f) of the suction hole 62h.

For example, the wind speed (hereinafter referred to as " suction wind velocity ") when the droplet is sucked by the suction hole 62h is preferably at least 2 m / sec, more preferably at least 5 m / / sec or less. In this embodiment, the suction wind speed is 6.4 m / sec. The suction air velocity is a value within a range of not less than 4 m / sec but not more than 20 m / sec in a range not pulling the ink 4i (main droplets not droplets).

The size of the suction hole 62h can be changed. For example, the size of the suction hole 62h may be changed by providing a blocking mechanism such as a shutter that can move along the long longitudinal direction of the suction hole 62h on the suction surface 62f.

The second suction mechanism 62 has a shape in which the suction surface 62f is inclined forward and upward so as to face the injection path Ia. Specifically, the second suction mechanism 62 has a rectangular suction surface 62f having a long length in the width direction (y direction) and a suction surface 62f extending in the forward direction with the left and right edges of the suction surface 62f as the upper floor And left and right side surfaces 64 forming a trapezoid. A support shaft 65 projecting in the left and right directions (y direction) parallel to the normal line of the left and right side surfaces 64 is provided at the rear end (-x direction side end) of the second suction mechanism 62.

On the right and left sides of the second suction mechanism 62, a support mechanism 73 capable of pivotally supporting the second suction mechanism 62 is provided. Below the second suction mechanism 62, a stage 72 extending in the film width direction (y direction) is provided. The supporting mechanism 73 includes a supporting table 73a fixed to the stage 72, a supporting plate 73b fixed to the supporting table 73a, and a supporting plate 73b And an upstanding piece 73c extending upward.

The standing piece 73c is formed with an elongated hole 73h which is opened in the thickness direction (y direction) of the standing piece 73c and extends upward and downward. The supporting shaft 65 of the second suction mechanism 62 is inserted into the elongated hole 73h of the standing piece 73c. The size of the long hole 73h is such that it can move up and down the support shaft 65 and pivot about the axis of the support shaft 65. [ In the inserted state in the long hole 73h, the support shaft 65 protrudes in the left-right direction from the standing piece 73c. The second suction mechanism 62 restricts the upward and downward movement and the rotation about the axis of the support shaft 65 by fixing the support shaft 65 to the standing piece 73c by a fixture not shown. For example, the position of the second suction mechanism 62 may be regulated by forming a screw thread on the left and right ends of the support shaft 65 and screwing and tightening a nut or the like to the thread of the support shaft 65.

Reference numeral 71 denotes a support for supporting the liquid ejection apparatus 20. The support base 71 extends in the width direction (y direction) of the droplet ejection apparatus 20. For example, the liquid ejection apparatus 20 is fastened to the support base 71 by a fastening member such as a bolt.

The first droplet 4a scattered when the ink 4i is ejected from the injection hole 21 and the ink 4i are injected between the injection surface 22 and the optical film F10X, By providing the suction device 60 capable of sucking at least one of the second droplet 4b that is scattered when the film F10X is landed on the film F10X without leaving the suction device 60, The first droplet 4a and the second droplet 4b which are scattered between the emission surface 22 and the optical film F10X can be attracted as compared with the case of ejecting the ink 4i, Even if the first droplet 4a is scattered or the second droplet 4b is scattered when the ink 4i is landed on the optical film F10X when the ink 4i is ejected from the first droplet 4 And the second droplet 4b are prevented from adhering to the area other than the defective portion of the optical film F10X, and the yield of the product can be improved.

The second suction mechanism 62 is arranged only below the injection passage Ia in which the ink 4i is injected in the vertical direction so that the suction mechanism is arranged on both sides with the injection passage Ia therebetween By reducing the number of parts, the cost can be reduced by a simple structure and the first droplet 4a and the second droplet 4b which are scattered below the injection path Ia under the influence of gravity are selectively sucked . Particularly, when the dot diameter is large (the droplet amount is large), when the optical film F10X is transported in the up and down direction, the droplets scattered downward become large, Only the lower side than the injection passage Ia).

In the above-described embodiment, the second suction mechanism 62 is disposed only below the injection passage Ia in which the ink 4i is injected in the vertical direction. However, the present invention is not limited to this. 16, the suction device 60 includes a first suction mechanism 61 disposed at one side with an injection passage Ia through which the ink 4i is injected, and a second suction mechanism 61 connected to the injection passage Ia, And a second suction mechanism 62 disposed on the other side with a space therebetween. That is, the suction mechanisms 61 and 62 may be disposed on both sides with the injection passage Ia therebetween. As a result, the first droplet 4a and the second droplet 4b scattered to both sides with the injection passage Ia therebetween can be effectively sucked in a simple configuration.

The second suction mechanism 62 (corresponding to the second suction mechanism 62 of the above-described embodiment) is disposed above the injection path Ia in the vertical direction, and the second suction mechanism 62 But may be disposed below the injection passage Ia. Thus, the first droplet 4a and the second droplet 4b, which are scattered to both sides of the injection path Ia, can be effectively sucked in a simple configuration.

The first suction mechanism 61 sucks the first droplet 4a and the second droplet 4b scattered from above the injection passage Ia and the second suction mechanism 62 sucks the lower portion of the injection passage Ia The first droplet 4a and the second droplet 4b which are scattered in the liquid are sucked. The droplet sucked by the first suction mechanism 61 is conveyed in the direction of arrow Q1 through the pipe and the droplet sucked by the second suction mechanism 62 is conveyed in the direction of arrow Q2 through the pipe, Are each stored in a tank (not shown).

(Third Embodiment)

Hereinafter, the configuration of the marking apparatus according to the third embodiment of the present invention will be described. 17 is a view showing the marking apparatus 304 according to the third embodiment, and is a view including a section corresponding to Fig. In this embodiment, constituent elements common to those of the first embodiment and the second variant example of the first embodiment are denoted by the same reference numerals, and a detailed description thereof will be omitted.

13, the marking apparatus 4 is provided with the liquid ejection apparatus 20, the shielding plate 30, the fixing member 40, and the scattering limiting member 50, as shown in Fig. 13 11, the fixing member 140 is integrally formed of the same member as the shielding plate 130, and the shielding plate 140 is formed integrally with the shielding plate 130. In the second modification of the first embodiment, 130 are separated from the injection surface 22. 17, the marking apparatus 304 includes a liquid ejection apparatus 20, a fixing member 340, and a suction apparatus 360. The liquid ejection apparatus 20 includes a liquid ejection apparatus 20, a fixing member 340,

The fixing member 340 is integrally formed by the same member as the shielding plate 330. [ The fixing member 340 is fixed to the injection head 20A together with the shielding plate 330. [ The fixing member 340 has a shielding plate 330 and a side wall portion 141. For example, the fixing member 340 is formed of a metal plate such as SUS.

The shielding plate 330 is separated from the exit surface 22. Specifically, the second main surface 335 of the shielding plate 330 is disposed forward (+ x direction) than the emission surface 22. By disengaging the shielding plate 330 from the emitting surface 22, the shielding plate 330 also functions as the above-described scattering limiting member. More specifically, the second main surface 335 (the surface on the side of the emission surface 22) of the shielding plate 330 is separated from the emission surface 22 by the first splash plate 4a, And the first main surface 332 of the shielding plate 330 (surface on the side of the optical film F10X) restricts the movement of the second spline 4b toward the emission surface 22 .

A tapered surface 336a having an inclined surface 336a inclined with respect to the normal to the emission surface 22 is formed in the edge of the opening 331 of the shielding plate 330 on the side of the emission surface 22, A portion 336 is formed. The edge of the opening 331 of the shielding plate 330 on the side of the emission surface 22 is located at the boundary between the inner wall surface 331a of the opening 331 and the second main surface 335 of the shielding plate 330 do.

In this embodiment, a guide roll 7 in contact with the optical film F10X is provided. The liquid ejection apparatus 20 according to the present embodiment is disposed so as to oppose the guide roll 7 with the optical film F10X therebetween while the optical film F10X is being conveyed. The droplet ejecting apparatus 20 ejects the ink 4i (see FIG. 9) on the side opposite to the position where the optical film F10X is in contact with the guide roll 7.

It is preferable that the optical film F10X is attached to the outer peripheral surface of the guide roll 7 at an angle range of not less than 40 占 and not more than 130 占 (hereinafter referred to as "holding angle?"). Here, the holding angle is set to a value represented by the central angle of the guide roll 7 in the angular range of the portion where the optical film F10X makes contact with the outer circumferential face of the guide roll 7 in the circumferential direction.

This is because the optical film F10X is likely to slide on the outer circumferential surface of the guide roll 7 if the holding angle is less than 40 DEG and the optical film F10X may be scratched, ([theta]) of more than 130 deg., for example, bubbles can be easily interposed between the surface protective film and the polarizing film.

When the tension applied to the optical film F10X is small, the holding angle? Is preferably set to a value exceeding 90 deg., More preferably 95 deg. Or more. The holding angle [theta] is 95 DEG or more, even when the tensile force applied to the optical film F10X is small, the fluctuation generated in the optical film F10X Can be suppressed. On the other hand, when the tension applied to the optical film F10X is large, the holding angle [theta] is preferably less than 90 [deg.], More preferably 85 [deg.] Or less. Thus, even when the tension applied to the optical film F10X is large, the optical film F10X can be prevented from being excessively brought into close contact with the outer peripheral surface of the guide roll 7. [

The transporting speed of the optical film F10X is usually in the range of 9 m / min to 50 m / min. The tensile force applied to the optical film F10X is a value in the range of 400 N or more and 1500 N or less in the drying furnace and a value in the range of 200 N or more and 500 N or less outside the drying furnace. The width of the optical film F10X is in the range of 500 mm or more and 1500 mm or less, and the thickness of the optical film F10X is in the range of 10 占 퐉 or more but 300 占 퐉 or less. As the width of the optical film F10X becomes larger and the thickness of the optical film F10X becomes smaller, the optical film F10X tends to be shaken.

For example, the outer diameter of the guide roll 7 is preferably in the range of 100 mm or more and 150 mm or less. The reason for this is that if the outer diameter of the guide roll 7 is increased, the area of the optical film F10X contacting the outer peripheral surface of the guide roll 7 with respect to the holding angle becomes larger, However, if the outer diameter of the guide roll 7 is excessively increased, the above-described scraping and bubbling of the optical film F10X tends to occur.

For example, the roundness of the guide roll 7 is preferably a value of 1.0 mm or less, more preferably 0.5 mm or less. This is because as the roundness of the guide roll 7 becomes smaller, the vibration of the optical film F10X contacting the guide roll 7 can be suppressed.

For example, the surface roughness (maximum roughness Ry) on the outer peripheral surface of the guide roll 7 is preferably a value of 100 s or less, more preferably 25 s or less. This is because if the surface roughness (maximum roughness Ry) on the outer circumferential surface of the guide roll 7 is excessively large, the above-described scraping and bubbling of the optical film F10X tends to occur.

Further, a guide roll contacting the optical film F10X may be further provided on the upstream side and the downstream side of the guide roll 7 from the viewpoint of more effectively suppressing the fluctuation generated in the optical film F10X. The optical film F10X may have a holding angle with respect to the guide roll to be added.

The guide roll 7 can move back and forth in the direction V2 intersecting the transport direction V1 of the optical film F10X. For example, by attaching a cylinder mechanism or the like to the guide roll 7, the guide roll 7 may be allowed to move in an oblique direction such as forward, downward, rearward, and the like. Thus, the workability can be improved from the viewpoints of the paper passing property, the seam, the head finish property, and the like.

Concretely, from the viewpoint of notification property, when the optical film F10 is transported (passed) in a state in which the optical film F10 is not being transported to the transporting line 9 304 and the guide roll 7 is widened to improve workability.

Next, a description will be given in terms of joints. When the disk rolls R1 and R2 are exchanged, a seam occurs when the optical film F10X is made of a tape or the like. In the optical film F10X, the thickness of the joint portion is larger than the thickness of the ordinary portion (the thickness of the portion without the joint). Even in such a case, by moving the guide roll 7, the optical film F10X can be conveyed to the conveyance line 9 while avoiding contact between the joint portion and the marking device 304, .

Here, the term head cleaning refers to the cleaning of the head. By making the guide roll 7 movable, the work space can be widened, so that workability can be improved.

In addition, the droplet ejecting apparatus 20 may be allowed to move back and forth in a direction (for example, front-back direction) intersecting with the carrying direction V1 of the optical film F10X.

17, the reference character Va designates a portion (hereinafter, referred to as " opposed portion ") where the fixing member 340 and the guide roll 7 oppose each other including the injection passage Ia (see Fig. 9) .

The suction device 360 includes a first suction mechanism 361 disposed on one side with the opposed portion Va therebetween and a second suction mechanism 362 disposed on the other side with the opposed portion Va interposed therebetween Respectively. That is, the suction mechanisms 361 and 362 are disposed on both sides with the facing portion Va therebetween. Specifically, the first suction mechanism 361 is disposed above the opposed portion Va in the vertical direction, and the second suction mechanism 362 is disposed below the opposed portion Va in the vertical direction.

The first suction mechanism 361 is formed with a suction surface 361f sloping forward and downward so as to face the opposite portion Va. The second suction mechanism 362 is formed with a suction surface 362f inclined rearward and downward so as to face the opposite portion Va. Suction holes (not shown) for sucking the first and second droplets 4a and 4b are formed on the respective suction surfaces 361f and 362f. Each of the suction mechanisms 361 and 362 is disposed so that each of the suction surfaces 361f and 362f enters the gap between the first main surface 332 of the shielding plate 330 and the optical film F10X contacting the guide roll 7. [ .

An inclined surface 332 inclined with respect to the normal to the exit surface 22 is formed in the edge portion of the opening 331 of the shielding plate 330 on the exit surface 22 side so as to face the exit hole 21. [ The first droplet 4a can be received on the inclined surface 336a by forming the tapered portion 336 having the first droplet 336a so that the first droplet 4a can be prevented from being disrupted. The inner wall surface 331a of the opening portion 331 and the inner wall surface 331a of the second main surface 331a of the shielding plate 330 may be tapered, The first droplet 4a that is scattered when the ink 4i is ejected from the injection hole 21 is likely to be divided at the corner portion .

The suction device 360 includes a first suction mechanism 361 disposed on one side with the opposed portion Va therebetween and a second suction mechanism 362 disposed on the other side with the opposed portion Va interposed therebetween, The first droplet 4a and the second droplet 4b which are scattered to both sides with the opposed portion Va therebetween can be effectively sucked in a simple configuration.

The first suction mechanism 361 is disposed above the opposed portion Va in the vertical direction and the second suction mechanism 362 is disposed below the opposed portion Va in the vertical direction, The first droplet 4a and the second droplet 4b which are scattered to both sides in the up and down directions can be effectively sucked in a simple configuration.

Each of the suction mechanisms 361 and 362 is disposed on the gap between the first main surface 332 of the shielding plate 330 and the optical film F10X contacting the guide roll 7 The first droplet 4a and the second droplet 4b scattered between the emission surface 22 and the optical film F10X can be effectively attracted to the optical path between the exit surface 22 and the optical film F10X, can do. In addition, the second droplet 4b can be attracted more effectively by bringing the suction hole closer to the landing position of the ink 4i.

The liquid film ejecting apparatus 20 is disposed so as to face the guide roll 7 contacting the optical film F10X with the optical film F10X therebetween while the optical film F10X is being conveyed, It is possible to arrange the liquid ejection apparatus 20 and the fixing member 340 in a state in which the fluctuation occurring in the fixing surface 340 of the fixing member 340 is suppressed, The diffusion range of the droplet 4a can be made as small as possible by making the shielding plate 330 as small as possible within a range in which the shielding plate 330 does not contact the optical film F10X.

The distance between the suction surface of the suction mechanisms 361 and 362 and the facing portion Va can be set as small as possible within the range in which the suction mechanisms 361 and 362 do not suck the optical film F10X, 4b can be absorbed as much as possible.

Even if the fixing member 340 (the shielding plate 330) is not provided, the distance between the injection hole 21 of the injection head 20A and the optical film F10X is set such that the injection surface 22 is the optical film F10X, the diffusion range of the droplet 4a can be minimized.

The defect inspection system 310 according to the present embodiment further includes a guide roll 7 in contact with the optical film F10X and the marking apparatus 304 is provided with a guide roll 7 And ejects the ink 4i on the side opposite to the position where the optical film F10X is in contact with the guide roll 7.

According to the present embodiment, it is possible to dispose the droplet ejection apparatus 20 and the fixing member 340 in a state in which fluctuation generated in the optical film F10X is suppressed by additionally providing the guide roll 7 described above The distance between the shielding plate 330 and the emitting surface 22 of the fixing member 340 is made as small as possible within a range in which the shielding plate 330 does not contact the optical film F10X, The range can be made as small as possible.

In the present embodiment, the shielding plate 330 is an example of a flat plate, that is, the first main surface 332 of the shielding plate 330 is a surface parallel to the yz plane. However, the present invention is not limited to this. For example, when viewed from a cross-section, the first major surface of the shield plate is located on the outer circumferential surface of the guide roll 7 so as to be recessed toward the side opposite to the guide roll 7, It may be a circular arc-shaped surface. As a result, the distance between the shielding plate and the optical film F10X can be further reduced as compared with the case where the shielding plate 330 is formed into a flat plate, so that the spread range of the droplet 4a can be more effectively reduced.

In addition, the present invention is not necessarily limited to the above-described embodiments, and various modifications can be made without departing from the gist of the present invention.

In the embodiment described above, the example in which the marking apparatus ejects the ink 4i in the direction perpendicular to the vertical direction with respect to the optical film F10X transported in the direction parallel to the vertical direction by the transporting line 9 has been described, It is not limited to this. For example, the ink 4i may be ejected from the lower side of the optical film F10X on which the marking device is transported in the horizontal direction. Even in this case, as compared with the case where the marking apparatus ejects the ink 4i from above with respect to the optical film F10X transported in the horizontal direction, the ink 4i is naturally dropped from the injection hole 21 under the influence of gravity Can be suppressed.

In the above embodiment, the scattering regulating plates and the suction mechanisms are arranged on both sides of the injection path Ia through which the ink 4i is injected from the marking device, but this is not limitative. For example, the direction of the wind generated by the conveyance of the optical film F10X and the direction of the injection path Ia of the ink 4i allow the droplets of the ink 4i to concentrate on one side with the injection path Ia therebetween. The scattering regulation plate or the suction mechanism may be disposed only on one side thereof.

In the embodiment described above, a configuration in which a plurality of injection heads having a plurality of injection holes are arranged so as to cover the printing range in the width direction of the optical film F10X in the liquid droplet ejection apparatus as shown in Fig. 7 However, this is not limited to this. For example, the liquid film ejection apparatus having a single injection head having one to three ejection holes moves in the width direction and the conveyance direction of the optical film F10X in accordance with the defect position information from the control device, The ink 4i may be ejected to the defective position on the print medium. The scattering control plate or the suction mechanism may also move to the defect position together with the liquid ejection apparatus to prevent the optical film F10X from being contaminated by the droplet of the ink 4i.

In addition, the defect inspection system 10 has been described by taking a configuration provided in a part of the film production apparatus 1 as an example, but the defect inspection system 10 is not limited thereto. The defect inspection system 10 may be provided separately from the film production apparatus 1. For example, the film production apparatus 1 does not include the defect inspection system 10, and the optical film F10X produced in the film production apparatus 1 is wound on the rewinding unit 8 to the original film of the optical film F10X The defect inspection system 10 may be installed in a part of the equipment in the next step after being wound on the core material as the roll R2 and then sent to the next step.

The film to which the present invention is applied is not necessarily limited to the optical film such as the polarizing film, the retardation film and the brightness enhancement film described above. The present invention is widely applied to a film on which printing is performed by a marking apparatus can do.

While the preferred embodiments of the present invention have been described with reference to the accompanying drawings, it is needless to say that the present invention is not limited to these examples. The various shapes and combinations of the constituent members shown in the above-described examples are merely examples, and can be variously changed on the basis of design requirements etc. without departing from the gist of the present invention.

1: film manufacturing apparatus, 2: defect inspection apparatus, 4, 204, 304: marking apparatus, 4a: droplet, 4b: droplet, 7: guide roll, 9: return line, 10, 310: defect inspection system, The present invention relates to a droplet ejection apparatus and a liquid droplet ejecting apparatus which are capable of controlling a droplet ejection apparatus and a liquid droplet ejection apparatus having the same. 33: a first main surface (a surface opposite to the emission surface of the shield plate), 33: a side end of the shield plate, 34: A first wall portion of the shielding plate and a second wall portion of the shielding plate are provided on the side wall of the fixing member. d1: diameter of the opening, d2: diameter of the injection hole, F10X: optical film

Claims (13)

A marking apparatus capable of marking information by ejecting droplets onto an optical film,
A droplet ejection device having an ejection surface on which an ejection hole for ejecting the droplet is formed in the optical film;
And a scattering control member provided between the emission surface and the optical film and capable of shielding a droplet scattered until the droplet is ejected from the injection hole to be deposited on the optical film,
Wherein the scattering limiting member is provided with a blocking surface that widens in a direction intersecting the normal line of the emission surface. The marking apparatus according to claim 1, wherein the droplet includes at least one of a first droplet scattered when the droplet is ejected from the injection hole and a second droplet scattered when the droplet lands on the optical film . 3. The marking apparatus according to claim 1 or 2, wherein the scattering limiting member has a scattering regulating plate having a thickness in a direction parallel to a normal line of the exit surface. 4. The apparatus according to claim 3, wherein the scattering restriction plate includes a first scattering restriction plate disposed on one side with an injection path through which the liquid droplets are injected, and a second scattering restriction plate disposed on the other side between the injection paths, Of the marking apparatus. 5. The injection molding machine according to claim 4, wherein the injection passage follows a direction intersecting the vertical direction,
The first shake regulation plate is disposed above the injection passage in the vertical direction,
And the second scattering restriction plate is disposed below the injection passage in the vertical direction. The liquid crystal display device according to claim 4 or 5, wherein the first scattering restriction plate is formed with a first blocking surface that widens in a direction intersecting the normal line of the emission surface,
And the second scattering restriction plate is provided with a second blocking surface that is widened in parallel with the first blocking surface. 7. The marking apparatus according to any one of claims 4 to 6, wherein an interval between the first scattering restriction plate and the second scattering restriction plate is larger than a diameter of the injection hole. 6. The marking apparatus according to claim 5, wherein the scattering restriction plate is only the second shake restriction plate. The liquid ejecting apparatus according to any one of claims 1 to 8, further comprising a shielding member provided on the emitting surface and capable of blocking a droplet scattered when the droplet is ejected from the injection hole,
Wherein the shielding member is provided with an opening portion which is opened at a position opposite to the injection hole and has an inner wall surface for shielding the droplet scattered in a direction intersecting the normal line of the emission surface. 10. The optical film according to any one of claims 1 to 9, wherein a droplet which is provided between the exit surface and the optical film and is scattered until the droplet is ejected from the injection hole and then landed on the optical film is sucked Wherein the marking device further comprises a suction device. 11. A liquid ejecting apparatus according to any one of claims 1 to 10, wherein the liquid film ejecting apparatus includes a guide roll which is in contact with the optical film while the optical film is conveyed in the form of a long strip, And the droplet is ejected from a position opposite to a position where the optical film is in contact with the guide roll. A transporting line for transporting the long strip-shaped film,
A defect inspection apparatus for defect inspection of the film conveyed to the conveyance line,
The defect inspection system according to any one of claims 1 to 11, which is capable of marking information by injecting a droplet at the position of the defect based on the defect inspection result. A method for producing a film, comprising the step of marking using a defect inspection system according to claim 12.

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